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S!1.1PLE DESCRIPTION
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<br />Holed CH ~-21-1
<br />Location: 366O'F!aL x 3101'FSL Section 21-~5-102W, 6th,PM, Garfield County, Colorado
<br />Elev, 5942'. Spud 1-10-74, Completed 1-11-74, TD 146'
<br />Rot•+ry Air Drilling
<br />0 15 Overburden, alluvial sand, clay, and boulders, tan.
<br />1$ 21 Coal, weathered, soft,
<br />Inserted 21' of casing, begin air core.
<br />Core ~ 1 21-28' 8$p Recovery
<br />21 25 Siltstone, grey, high carbon content, hard.
<br />25 26 Sand and shale, F.Gr., S&P (Salt and Pepper texture), interbedded,
<br />high carbon content, hard. tan to brown,
<br />26 28 Sand, tan to grey, M,Gr„ S&P, Some carbon fragments, hard,
<br />Core ~ 2 28-34' ~0~ Recovery
<br />28 34 Sand, tan to grey, M.Gr., S&P, Some carbon fragments, hard.
<br />Core 3
<br />• ' 34 42
<br />42 43
<br />43 44
<br />Core ~ 4
<br />34-41+' 95~ Recovery
<br />Sand, rusty tan to grey, M,Gr., S&P, some carbon fragments, hard,
<br />Note: 3" Coaly sand at 38.3-3£3.6, 1" Coaly sand at 40.0,
<br />carbonaceous sand at 41,3 to 41.6,
<br />Sand, grey, M.Gr., S&P, some carbon fragments, hard.
<br />Sand, rusty tan to grey, 1d,Gx!„ S&P, some carbon fragments, hard,
<br />~+4-54' 95~ Recovery
<br />44 46.5
<br />46.5 53.5
<br />53.5 54
<br />i
<br />"~ Core ~
<br />`` ~
<br />` "v ,~~4
<br />54,2
<br />56.4
<br />Sand, rusty tan to grey,=.M.Gr „ S&P, some carbon fragments, haid.•
<br />Shale, dk, grey, carbonaceous, hard.
<br />Shale, dk, grey, carbonaceous, few thin coal stringers, hard.
<br />54-59~ 100` Recovery
<br />54,2 Coal
<br />56,4 Shale, dk, grey, carbonaceous, few thin coal stringers, hard.
<br />59 Siltstone, grey, some carbon, hard,
<br />59-64' 100 Recovery
<br />Core ~} 6
<br />59 64
<br />Core ~ 7
<br />64
<br />65
<br />• 65.5
<br />Siltstone, grey, some carbon, hard,
<br />64-74' 500 Recovery
<br />65 Siltstone, grey, some carbon, hard.
<br />65,5 Sand, Siltstone, and shale, grey, interbedded, some carbon, hard.
<br />66,5 Shale, dk, grey, carbonaceous, dew coal stringers, hard.
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